{
  "bibcode": "2005GCN..4336....1K",
  "body": "I. Khamitov (TUG), I. Bikmaev, R. Zhuchkov, N. Sakhibullin (KSU/AST)\nZ. Aslan (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.),\nR. Burenin, M. Pavlinsky, R. Sunyaev (IKI)\n\nreport:\n\nThe error box of GRB 051211b (INTEGRAL trig. 2712; Mereghetti et al,\nGCN4327) was observed with Russian-Turkish 1.5-m telescope (RTT150,\nBakyrlytepe, TUBITAK National Observatory, Turkey), starting at Dec. 11,\n22:23UT, i.e. 18 min after the burst. Observations were started at\nzenith distance Z=69 degrees and were continued until the object\ndescended into the clouds near the horizon.\n\nWe made 30x60s exposures in R. The first 20 images were taken in clear\nsky but the last 10 images show a variable background because of clouds\nand bright Moon. We did not find the afterglow candidate reported by\nKlotz et al. (GCN4328) nor on first 60s image nor on image of 20\nco-added good images.\n\nAt the XRT position (Pagani et al., GCN 4332) we marginally detected\nonly one source near the detection limit of our combined image. The\ncoordinates of this source are: 23:02:42.25 +55:04:53.4 (J2000). The\nfinding chart can be found at:\n\nhttp://hea.iki.rssi.ru/~rodion/GRB/051211b/r.jpg\n\nUsing USNO-B1 stars we estimate limiting magnitude in our combined image\nas R=~22.3.\n\nThis message may be cited.",
  "circularId": 4336,
  "createdOn": 1134388505000,
  "email": "rodion@hea.iki.rssi.ru",
  "subject": "GRB 051211b: RTT150 optical observations",
  "submitter": "Rodion Burenin at IKI, Moscow  <rodion@hea.iki.rssi.ru>",
  "eventId": "GRB 051211B"
}